Die cutting edge surfacing structure

Abstract

The utility model relates to the technical field of machining, in particular to a die cutting edge surfacing structure. The die comprises a die body and a cutting edge arranged in the center of the die body, the hardness of the die body is HRC42-46, and a plurality of mounting holes are formed in the periphery of the die body. The hardness of the cutting edge is HRC46-52, and the cutting edge is a protruding edge protruding upwards along the edge of the center hole of the die; the surfacing thickness of the cutting edge is 10 mm, and the width of the cutting edge is 7 And an arc-shaped transition section is arranged between the die and the cutting edge. According to the utility model, common 45 # steel is adopted as the die base body, high-hardness materials are overlaid on the edge of the central hole of the die, and the arc-shaped transition section is arranged to effectively prolong the service life of the die; the surfacing structure with the cutting edge arranged in the center of the die is improved, and the hardness of the cutting edge of the product structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a die cutting edge surfacing structure. Background Art

[0002] During the mold processing, the cutting edge is the part of the mold that is in direct contact with the processed material and is subjected to greater impact and wear. Traditional mold cutting edges often have problems such as short service life, poor wear resistance, and easy cracking due to insufficient material hardness and unreasonable design. Therefore, how to improve the performance of the mold cutting edge has become an urgent problem to be solved. In order to solve the above technical problems, technical personnel in this field have made the following efforts. For example, a Chinese patent, with the authorization announcement number CN218798523U, discloses a cutting edge structure of a forging trimming die and a forging trimming die, which welds a transition layer and a cutting edge on the die body, so that the materials of the cutting edge and the transition layer can be selected according to needs to ensure the performance of the cutting edge. The use of layered cladding is beneficial to increase the strength and high-temperature red hardness of the cutting edge. However, the above scheme is aimed at the forging trimming die, and it is impossible to improve the cutting edge set in the center hole of the die, and the strength after improvement does not meet the requirements of the cutting edge of the center hole of the die. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a die cutting edge surfacing structure.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A die cutting edge surfacing structure comprises a die and a cutting edge arranged at the center of the die, wherein:

[0006] The mold has a hardness of HRC42-46, and a plurality of mounting holes are arranged on the periphery of the mold;

[0007] The cutting edge has a hardness of HRC46-52 and is a convex edge that bulges upward along the edge of the center hole of the mold; the surfacing thickness of the cutting edge is 10mm and the width is 7mm;

[0008] An arc-shaped transition section is arranged between the die and the cutting edge.

[0009] This technical solution effectively improves the service life of the mold by using ordinary 45# steel as the mold base, surfacing high-hardness materials on the edge of the mold center hole, and setting an arc-shaped transition section. Specifically, the cutting edge is surfacing with high-hardness materials to enhance the wear resistance and service life of the mold in cutting, stamping and other operations by increasing the local hardness (HRC46-52); by surfacing high-hardness materials on the substrate at the edge of the center hole of the mold, a convex edge that bulges upward along the edge of the center hole of the mold is formed as the cutting edge; the selection of surfacing thickness and width (10mm thickness and 7mm width) is determined based on the working conditions of the mold and the required wear resistance. Sufficient surfacing thickness and width ensure that the cutting edge has sufficient strength and wear resistance; by tempering at 500 degrees and keeping warm for more than 5 hours, the stress and tissue defects generated during the surfacing process are eliminated, and the comprehensive mechanical properties of the material are improved; the arc transition section is to achieve a smooth transition between the mold substrate and the cutting edge, reduce stress concentration and cracks, and improve the impact resistance of the cutting edge; the cutting edge forms an acute-angled section relative to the arc transition section, which is conducive to cutting and stamping operations and improves the working efficiency of the mold; the cutting edge is a closed ring structure formed along the center hole, which ensures that the mold is evenly stressed during cutting or stamping and avoids local excessive wear.

[0010] In addition, the die edge surfacing structure proposed in the utility model also has the following additional technical features:

[0011] According to an embodiment of the present invention, the mold is made of 45# steel.

[0012] In this technical solution, the mold material is 45# steel, which has good comprehensive mechanical properties, is easy to process and purchase, and has moderate hardness (HRC42-46). As the mold base, it can withstand certain impact and wear.

[0013] According to an embodiment of the utility model, a groove for welding the arc-shaped transition section is provided on the edge of the center hole of the mold.

[0014] In this technical solution, the groove provides a clear positioning point and support surface for welding, making the welding process more stable and controllable; the groove also accommodates welding materials, and the arc-shaped transition section formed by welding is tightly combined with the mold base and the cutting edge part to form an integral structure, further enhancing the strength and stability of the mold.

[0015] According to an embodiment of the present invention, the arc-shaped transition section is made of the same material as the cutting edge, and the cutting edge bulges upward from the arc-shaped transition section.

[0016] In this technical solution, since the arc-shaped transition section and the cutting edge are made of the same material, this continuity not only ensures the close connection between the two during the use of the mold, but also avoids problems such as stress concentration or cracks caused by material differences. By setting the cutting edge to bulge upward from the arc-shaped transition section, these impacts and stresses are dispersed and buffered in the transition section; the existence of the arc-shaped transition section is like an elastic pad, reducing the direct effect of stress on the cutting edge, thereby improving the durability and service life of the cutting edge.

[0017] According to an embodiment of the utility model, the cutting edge forms an acute-angled cut surface relative to the arc-shaped transition section.

[0018] This technical solution concentrates stress on the cutting edge by precisely controlling the size and shape of the sharp angle, thereby improving the hardness and wear resistance of the cutting edge and reducing the stress impact on the entire mold; the sharp-angle section also serves as a stress release point to avoid excessive stress in other parts.

[0019] According to an embodiment of the present invention, the cutting edge is a closed ring structure formed along the center hole.

[0020] In this technical solution, the closed ring structure enables the cutting edge to be evenly stressed during operation, ensuring that the force is evenly distributed in all parts of the cutting edge, avoiding damage or deformation caused by excessive local stress, and improving the stability and durability of the mold. In addition, the closed ring structure ensures the flatness and consistency of the processed surface, reducing processing defects caused by discontinuity or jump of the cutting edge.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] (1) The service life of the mold is effectively improved by using ordinary 45# steel as the mold base, surfacing high-hardness materials on the edge of the mold center hole, and setting an arc transition section;

[0023] (2) Improvements were made to the surfacing structure with the cutting edge located at the center of the mold, thereby increasing the cutting edge hardness of this type of product structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model.

[0025] In the figure: 1. mold; 2. cutting edge; 3. mounting hole; 4. arc-shaped transition section. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] like Figure 1 As shown, this embodiment provides a die edge surfacing structure, comprising a die 1, and a cutting edge 2 arranged at the center of the die 1, wherein:

[0029] The mold 1 has a hardness of HRC42-46, and a plurality of mounting holes 3 are provided on the periphery of the mold 1;

[0030] The cutting edge 2 has a hardness of HRC46-52 and is a convex edge that bulges upward along the edge of the center hole of the mold 1; the surfacing thickness of the cutting edge 2 is 10 mm and the width is 7 mm;

[0031] An arc-shaped transition section 4 is provided between the die 1 and the cutting edge 2 .

[0032] like Figure 1 As shown, this technical solution effectively improves the service life of the mold 1 by using ordinary 45# steel as the substrate of the mold 1, surfacing high-hardness materials on the edge of the center hole of the mold 1, and setting an arc-shaped transition section 4. Specifically, the cutting edge 2 is surfacing with high-hardness materials, and the wear resistance and service life of the mold 1 in cutting, stamping and other operations are enhanced by increasing the local hardness (HRC46-52); by surfacing high-hardness materials on the substrate at the edge of the center hole of the mold 1, a convex edge that bulges upward along the edge of the center hole of the mold 1 is formed as the cutting edge 2; the selection of surfacing thickness and width (10mm thickness and 7mm width) is determined based on the working conditions of the mold 1 and the required wear resistance. Sufficient surfacing thickness and width ensure that the cutting edge 2 has sufficient strength and wear resistance; through 5 The mold 1 is tempered at 00 degrees and kept warm for more than 5 hours to eliminate the stress and tissue defects generated during the surfacing process and improve the comprehensive mechanical properties of the material; the arc transition section 4 is to achieve a smooth transition between the mold 1 substrate and the cutting edge 2, reduce stress concentration and cracks, and improve the impact resistance of the cutting edge 2; the cutting edge 2 forms an acute-angle section relative to the arc transition section 4, which is conducive to cutting and stamping operations and improves the working efficiency of the mold 1; the cutting edge 2 is a closed annular structure formed along the center hole, which ensures that the mold 1 is evenly stressed during the cutting or stamping process and avoids local excessive wear.

[0033] In addition, the die edge surfacing structure proposed in the utility model also has the following additional technical features:

[0034] According to an embodiment of the present invention, the mold 1 is made of 45# steel.

[0035] In this technical solution, the mold 1 is made of 45# steel, which has good comprehensive mechanical properties, is easy to process and purchase, and has a moderate hardness (HRC42-46). As the base of the mold 1, it can withstand certain impact and wear.

[0036] According to an embodiment of the utility model, a groove for welding the arc-shaped transition section 4 is provided on the edge of the center hole of the mold 1 .

[0037] In the present technical solution, the groove provides a clear positioning point and support surface for welding, making the welding process more stable and controllable; the groove also accommodates welding materials, and the arc-shaped transition section 4 formed by welding is tightly combined with the mold 1 base and the cutting edge 2 to form an integral structure, further enhancing the strength and stability of the mold 1.

[0038] According to an embodiment of the present invention, the arc-shaped transition section 4 is made of the same material as the cutting edge 2 , and the cutting edge 2 bulges upward from the arc-shaped transition section 4 .

[0039] In this technical solution, since the arc-shaped transition section 4 and the cutting edge 2 are made of the same material, this continuity not only ensures the close connection between the two during the use of the mold 1, but also avoids problems such as stress concentration or cracks caused by material differences. By setting the cutting edge 2 to bulge upward from the arc-shaped transition section 4, these impacts and stresses are dispersed and buffered in the transition section; the existence of the arc-shaped transition section 4 is like an elastic pad, reducing the direct effect of stress on the cutting edge 2, thereby improving the durability and service life of the cutting edge 2.

[0040] According to an embodiment of the present invention, the cutting edge 2 forms an acute-angled cut surface relative to the arc-shaped transition section 4 .

[0041] This technical solution concentrates stress on the cutting edge 2 by precisely controlling the size and shape of the acute angle, thereby improving the hardness and wear resistance of the cutting edge 2 and reducing the stress impact on the entire mold 1; the acute angle section also serves as a stress release point to avoid excessive stress in other parts.

[0042] According to an embodiment of the present invention, the cutting edge 2 is a closed ring structure formed along the center hole.

[0043] In this technical solution, the closed ring structure enables the cutting edge 2 to be evenly stressed during operation, ensuring that the force is evenly distributed in various parts of the cutting edge 2, avoiding damage or deformation caused by excessive local stress, and improving the stability and durability of the mold 1. In addition, the closed ring structure ensures the flatness and consistency of the processed surface, reducing processing defects caused by discontinuity or jump of the cutting edge 2.

[0044] It should be noted that the base of the mold 1 is made of ordinary 45# steel, which has good comprehensive mechanical properties, moderate hardness (HRC42-46), and is easy to process and purchase. Several mounting holes 3 are set on the periphery of the mold 1 for mounting the mold 1 on the corresponding equipment. The edge of the center hole of the mold 1 will be surfacing, and a high-hardness material (hardness reaches HRC46-52) is used to form a cutting edge 2 on the base of the mold 1. The cutting edge 2 is designed to be a convex edge that bulges upward along the edge of the center hole of the mold 1, and its surfacing thickness is 10mm and the width is 7mm. The edge of the center hole of the mold 1 is pre-set with a groove for welding the arc transition section 4; the groove provides a clear positioning point and support surface for welding, making the welding process more stable and controllable; the groove can also accommodate welding materials, and the arc transition section 4 formed by welding is tightly combined with the mold 1 base and the cutting edge 2 to form an integral structure, thereby enhancing the strength and stability of the mold 1; the mold 1 will be heat treated, including tempering at 500 degrees and heat preservation for more than 5 hours, to eliminate the stress and organizational defects generated during the surfacing process and improve the comprehensive mechanical properties of the material; the final mold cutting edge surfacing structure has the same material as the arc transition section 4, and the cutting edge 2 bulges upward from the arc transition section 4. This design ensures the close combination of the cutting edge 2 and the transition section, while avoiding problems such as stress concentration or cracks caused by material differences; the sharp angle section formed by the cutting edge 2 relative to the arc transition section 4 is conducive to cutting and stamping operations, thereby improving the working efficiency of the mold 1; and the cutting edge 2 of the closed ring structure ensures that the force can be evenly applied during the processing process, avoiding local excessive wear, thereby improving the stability and durability of the mold 1.

[0045] The usage process of the above embodiment is as follows:

[0046] like Figure 1 As shown, the die edge cladding structure is accurately mounted on the corresponding stamping, cutting or other processing equipment through the mounting holes 3 set on its periphery. The edge 2 of the die edge cladding structure will directly contact the processed material to perform operations such as cutting and stamping. Since the edge 2 is cladding-welded with high-hardness materials and has sufficient cladding thickness and width, it can maintain high wear resistance and stability, ensuring processing quality and efficiency.

[0047] Although the present invention is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person of ordinary skill in the art may easily think of changes or substitutions within the technical scope disclosed in the present invention, and these changes or substitutions shall be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A die edge surfacing structure, characterized in that: It comprises a mold (1), and a cutting edge (2) arranged at the center of the mold (1), wherein: The mold (1) has a hardness of HRC42-46, and a plurality of mounting holes (3) are arranged on the periphery of the mold (1); The cutting edge (2) has a hardness of HRC46-52, and the cutting edge (2) is a convex edge that bulges upward along the edge of the center hole of the mold (1); the surfacing thickness of the cutting edge (2) is 10 mm and the width is 7 mm; An arc-shaped transition section (4) is provided between the mold (1) and the cutting edge (2).

2. The die edge surfacing structure according to claim 1, characterized in that: The mold (1) is made of 45# steel.

3. The die edge surfacing structure according to claim 1 or 2, characterized in that: A groove for welding the arc-shaped transition section (4) is provided at the edge of the central hole of the mold (1).

4. The die edge surfacing structure according to claim 1, characterized in that: The arc-shaped transition section (4) is made of the same material as the cutting edge (2), and the cutting edge (2) bulges upward from the arc-shaped transition section (4).

5. The die edge surfacing structure according to claim 4, characterized in that: The cutting edge (2) forms an acute-angled cut surface relative to the arc-shaped transition section (4).

6. The die edge surfacing structure according to claim 1 or 5, characterized in that: The cutting edge (2) is a closed annular structure formed along the central hole.

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